Cop carrier



Oct. 22, 1963 v U, KEYSER 3,107,879

COP CARRIER Filed Jan. 8, 1962 3 Sheets-Sheet 1 J. J. KEYSER Oct. 22,1963 COPCARRIER Filed Jan. .8, 1962 3 Sheets-Sheet 2 Oct. 22, 1963 J..1. KEYSER 3,107,879

COP CARRIER Filed Jan. 8, 1962 1 s-sheets-sheet s United States Patent3,107,879 COP CARRIER Johann Jacob Keyser, Grabenallee 16, Aarau,Switzerland Filed Jan. 8, 1962, Ser. No. 164,912 Claims priority,application Germany J an. 13, 1961 7 Claims. (Cl. 24-2-1183) The presentinvention relates to a cop carrier. By cop carrier is meant a sleeveupon which all single and multiple threads covered by the term yarn maybe wound, the processing of which is eifected on spinning, spooling ortwisting machines. The sleeves employed in connection with such machineshave heretofore been designed as a single coherent part in order toimpart upon the sleeve a suflicient stability during the winding of theyarn upon said sleeve as well as during the transport of the sleevewithin the plant and also out of the plant.

The employment of such sleeves requires that the cop is somewhat shorterthan the total length of the sleeve. Any processing or furtherprocessing of a single thread or a twist will be all the more favorablethe bigger the cop is, i.e. the greater the number of yards of endlesscoherent thread length on a yarn body. This requirement of furtherprocessing is met to a certain extent with the heretofore known sleevesand machines, but for spinning technological reasons, limits areencountered, for instance with regard to the balloon length or theballoon diameter, when working on ring spinning or ring twistingmachines. Also with spinning machines, certain limits have to be metbecause for instance with a iiyer, a certain length can be admittedonly, due to the occurring centrifugal forces when a corresponding rpm.is employed. The same remarks apply to the bells of bell spinningmachines. Similar conditions may be encountered with all other spinningmachines in spinning and twisting plants, which impede a furtherenlargement of the cop so that a further economic development is greatlyaffected. The requirement for an enlargement of the yarn body in theprocess ing industry has nevertheless remained, and it is for thisreason that tests have been conducted concerning so-called large cops.In this connection there exists on one hand the possibility of employinga correspondingly large yarn sleeve composed of a single part. However,in this instance it is necessary to adapt all parts employed inconnection with the winding operation so that also these parts have tobe dimensioned in conformity with the dimensions of the large cop. Thisin turn causes difliculties with regard to the construction as well asspinning technological and servicing difficulties.

It has also been proposed instead of a single part yarn sleeve for alarge cop to employ multi-sectlonal yarn sleeves. 'In this connection ithas been suggested to employ a sleeve composed of two parts in which ata certain winding up phase of one sleeve portion the second sleeveportion is put upon the first sleeve portion, or both parts are placedinto each other in order in this way to obtain an enlarged length of theyarn sleeve which, accordingly, will be able to receive a longer copthan customary.

The heretofore known two-sectional yarn sleeves, however, have thedrawback that their stability is insuflicient in view of the relativelyshort overlapping length of the sections, and this lack of stability isencountered not only during the winding up of the yarn on the respectiveprocessing machine but also during the further processing, particularlyduring the transport, because such two-sectional-yarn sleeve has thetendency to bend. This naturally affects the cop so that considerabledifiiculties can be encountered when processing the cop at the bentportion. In particular, breaks in the thread are caused thereby and evena number of layers may be pulled off at the same time which thenconstitute waste. Due to the fact that in view of this two-sectionalarrangement also difiiculties in spinning technological respect mayoccur, aside from the additional expenses concerning the construction,the manufacture of the so-called large cops has not been adopted inindustry to any material extent. It is furthermore to be kept in mindthat either during the further processing of the sleeves with the yarnwound thereon or at least during the transport of the empty sleeves, itis necessary to detach the two sleeve parts so that when said sleeveparts are again to be employed, a sorting thereof is necessary.

It is, therefore, an object of the present invention to provide a copcarrier which will overcome the above mentioned drawbacks.

It is another object of this inventionto provide a cop carrier whichwill permit the production of large cops without encountering theheretofore existing difiiculties in this respect with regard toconstruction, servicing and also with regard to spinning technologicalaspects.

The invention is illustrated by way of example in the accompanyingdrawings, in which:

FIG. -1 is a longitudinal section through a cop carrier according to theinvention, which consists of a main bobbin body and an auxiliary bobbinbody.

FIG. 2 illustrates the same cop carrier as FIG. 1 but in a differentposition of the auxiliary bobbin body.

FIG. 3 is a longitudinal section through a cop carrier according to thepresent invention, in which the main bobbin body is composed of an innerbobbin body and an outer transport bobbin body mounted on said innerbobbin body.

PEG. 4 is a longitudinal section through a cop carrier according to theinvention, in which the main bobbin body is provided with two auxiliarybobbin bodies, said carrier being shown in its position for the firstphase of receiving the yarn.

FIG. 5 shows the same cop carrier as 'FIG. 4 in a position for thesecond phase of receiving the yarn.

FIG. 6 illustrates the same bobbin carrier as FIGS. 4 and 5 in aposition for the third phase of receiving the yarn.

FIGS. 7a, 7b and 70 respectively illustrate in cross section differentcross sectional shapes of a cop carrier according to the presentinvention.

FIGS. 8 and 9 respectively illustrate in longitudinal section the lowerend of a cop carrier according to the present invention.

General Arrangement The cop carrier according to the present inventionis characterized primarily by a hollow main bobbin body having asubstantially uniform cross section throughout its length, and havingdisplaceably mounted thereon one or more auxiliary bobbin bodies, thelength of said auxiliary bobbin bodies or bobbin body equallingsubstantially the length of the main bobbin body divided by the quotientof the number of all auxiliary bobbin bodies plus one and the number ofthe auxiliary bobbin bodies plus one superimposed upon the respectiveauxiliary bobbin body.

In this way, the invention permits the manufacture of a cop carrier forlarge cops, which consists at least of two parts permanentlysuperimposed upon each other and which due to this superimposedcondition over the total length of each auxiliary bobbin body will havea stability at least equalling that of a yarn sleeve consisting of asingle part. As a matter of fact, the cop carrier according to thepresent invention may even have a higher stability. In addition thereto,a cop carrier according to the present invention also improves theconditions in spinning technological respect while simultaneouslyfacilitating the handling and servicing of the cop carrier.

Various possibilities exist for the design of the main bobbin body andthe auxiliary bobbin bodies according to the present invention. Thus, inconformity with the invention, the main bobbin body and the auxiliarybobbin body or bobbin bodies may have identical wall thickness. However,the main bobbin body may have a greater wall thickness than theauxiliary bobbin body or bobbin bodies. Furthermore, the main bobbinbody may be composed of an inner supporting bobbin body and asuperimposed transport bobbin body of approximately the same length, inwhich instance the latter may have the wall thickness of an auxiliarybobbin body.

Inasmuch as in spite of the relative axial displaceability of the mainbobbin body and the auxiliary bobbin body or bobbin bodies it isnecessary that the position of these bodies be assured in radialdirection, it is provided in conformity with the present invention thatthe main bobbin body and the auxiliary bobbin body or bobbin bodies havea cross sectional shape, for instance oval or polygonal, which isidentical with regard to the respective diameter and which will bringabout the transmission of rotation from one bobbin to the other. Inaddition to the transmission of rotation obtained in this way,simultaneously an equalization of the tolerance may be obtained for theirregularities which unavoidably occur when producing the bobbin bodies.

A further feature of the present invention is seen in that the mainbobbin body and the auxiliary bobbin body or bobbin bodies are adaptedto be connected to each other in a predetermined relative position as toheight. This last mentioned feature is not indispensable in any casebecause, if desired, the cross sectional shape of the main bobbin bodyand of the auxiliary bobbin body or bobbin bodies will in addition tosecuring the radial position also assure the axial position to asufficient extent.

Structural Arrangement Referring now to the drawings in detail and FIGS.1 and 2 thereof in particular, the cop carrier illustrated thereincomprises a hollow main bobbin body 1 of substantially uniform crosssection throughout the length thereof. Placed upon the main bobbin body1 is an auxiliary bobbin body 2 which permanently remains on the mainbobbin body 1 but is axially displaceable thereon. If desired, also aplurality of auxiliary bobbin bodies may together with the same orcommon main bobbin body form a cop carrier as will be explained furtherbelow. The length of the main bobbin body 1 determines the length of thecop, whereas the length of the auxiliary bobbin body or bobbin bodies 2is at a certain ratio with regard to the length of the main bobbinbody 1. This ratio is, according to the present invention, so selectedthat the length of the auxiliary bobbin body substantially equals thelength of the main bobbin body divided by the quotient the enumerator ofwhich equals the number of all auxiliary bobbin bodies+l while thedenominator equals the number of all auxiliary bobbin bodies-H which aresuperimposed upon the respective auxiliary bobbin body whose length isto be ascertained. In view of this ratio it will be assured that with acop carrier composed of a main bobbin body and an auxiliary bobbin body,the length of the auxiliary bobbin body will be approximately half thelength of the main bobbin body. With a cop carrier composed of the mainbobbin body and two auxiliary bobbin bodies, the length of the innerauxiliary bobbin body mounted on the main bobbin body will beapproximately /a of the length of the main bobbin body, whereas thesecond auxiliary bobbin body mounted on the first auxiliary bobbin bodywill have a length equalling /3 of the main bobbin body. Similarly, witha cop carrier composed of the main bobbin body and three auxiliarybobbin bodies mounted thereon, the

length of the auxiliary bobbin bodies in the sequence from the innermostto the outermost auxiliary bobbin body will respectively amount to A, /2and A of the length of the main bobbin body.

The main bobbin body and also the auxiliary bobbin bodies may consist ofvarious materials, for instance the main bobbin body may be wound up ofpaper in the same manner as it is generally known in connection withpaper sleeves or mailing tubes. The thus obtained bobbin bodies may alsobe impregnated. If desired, the cop carriers may also be made ofsynthetic material or metal while, depending on the purpose ofemployment, the main and auxiliary bobbin bodies may be made of the sameor different materials. Depending on the material employed, the mainbobbin body and the auxiliary bobbin bodies may have the same wallthickness. In the embodi ment illustrated in FIGS. 1 and 2, the mainbobbin body 1 which is assumed to have been made up of wound paper, hasa greater wall thickness than the auxiliary bobbin body 2. There alsoexists the possibility of designing a cop carrier according to thepresent invention as so-called transport sleeve as shown for instance inFIG. 3.

According to FIG. 3, the main bobbin body is, in contrast to FIGS. 1 and2, composed of two sections of substantially identical length. Morespecifically, the cop carrier according to FIG. 3 consists of an innercarrier body 3 and a superimposed transport body 4 of substantially thesame length as carrier body 3. Furthermore, an auxiliary bobbin body 5is mounted on the transport body 4. The wall thickness of the transportbody 4 substantially corresponds to the wall thickness of the auxiliarybobbin body 5.

FIGS. 4, 5 and 6 illustrate a cop carrier according to the inventionwhich is composed of a main bobbin body 6 and two superimposed auxiliarybobbin bodies 7 and 8. FIGS. 4 to 6 respectively illustrate diiferentpositions of the auxiliary bobbin bodies 7 and 8 on the main bobbin body6 during the winding up operation of the yarn upon the cop carrier. Therelative positions of the bobbin bodies according to FIG. 4 correspondto the first winding phase, whereas the relative positions of the bobbinbodies according to FIG. 5 correspond to the second winding phase, andthe relative positions of the bobbin bodies according to FIG. 6correspond to the third phase of the winding operation.

FIGS. 7 a, 7b and 7 c respectively illustrate various possibilities withregard to the design of the cross section of the bobbin body. As will beseen from these figures, the

' main bobbin body and the auxiliary bobbin body or bodies have a crosssectional shape in conformity with the diameter thereof, the crosssectional shape being such as to cause the auxiliary bobbin bodies torotate together with the main bobbin body.

More specifically, with regard to FIG. 7a, the main bobbin body 9 andthe auxiliary bobbin body 10 have a corresponding non-round contour sothat the main bobbin body 9 and the auxiliary bobbin body 10 areprevented from rotating relative to each other, i.e. when the mainbobbin body 9 is rotated, also the auxiliary bobbin body 10 will berotated without any slip loss.

According to FIG. 7b, the main bobbin body 11 is provided withlongitudinal grooves 13 engaged by corresponding longitudinal beads 13'of the adjacent auxiliary bobbin body. Corresponding beads are providedon the other auxiliary bobbin bodies for engagement with correspondinggrooves in the respective bobbin bodies therebelow. In this way, also aproper slip-free rotation of the auxiliary bobbin bodies with the mainbobbin body will be assured.

According to FIG. 70, the main bobbin body 14 and the auxiliary bobbinbody 15 are designed as corresponding polygons so that also in thisinstance a slip-free rotation of the auxiliary bobbin body with the mainbobbin body will be assured.

From the above it will be obvious that numerous other possibilitiesexist in order to assure that the auxiliary bobbin bodies will properlyrotate together with the main bobbin body. In all instances, in additionto the fact that the auxiliary bobbin bodies will be rotated togetherwith the main bobbin body upon rotation of the latter, the arrangementalso creates a tolerance compensation for the manufacturing tolerance ofthe bobbin bodies. The various cross sectional shapes of the bobbinbodies assure the uppermost winding of a winding layer so that thevarious layers of the wound up yarn of the cop will rest slip-free onthe cop carrier.

FIG. 8 illustrates by way of example how the main bobbin body 16 and theauxiliary bobbin body 17 are adapted to be coupled together at apredetermined height. According to the embodiment of FIG. 8, the lowerend of the main bobbin body 16 is provided with annular grooves havingresting therein a ring 18 which may be engaged by a corresponding groovein the auxiliary bobbin body 17. In this way, the relative position asto height between the main bobbin body 16 and the auxiliary bobbin body17 will be assured.

According to the embodiment shown in FIG. 9, the lower end of themainbobbin body 19 is provided with reinforcing head 20 so thatthe-lower end of the auxiliary bobbin body 21 can be seated upon theshoulder formed by said reinforcing head 20. It is, of course, to beunderstood that various other possibilities exist in order to establisha definite relative location of one or more auxiliary bobbin bodies withregard to the main bobbin body.

The winding of a yarn upon a cop carrier according to the presentinvention is effected in the following manner.

Referring first again to FIGS. 1 and 2, according to which the copcarrier is composed of the main bobbin body 1 and the auxiliary bobbinbody 2, this carrier is first placed upon a spindle adapted to rotate,and the auxiliary bobbin body 2 is moved into FIG. 1 position whichmeans that the auxiliary bobbin body 2 during the first winding phaseoccupies its upper position at the upper portion of the main bobbinbody 1. By a corresponding height adjustment of the spindle rail, or forinstance the ring rail, the rings are with their runners brought intosuch a position that the first winding layer will start at the lower endof the auxiliary bobbin body 2. The winding operation will then becontinued in customary manner until nearly the upper end of theauxiliary bobbin body 2 has been reached. In spite of the dimensionsresulting from the length of the main bobbin body 1 of the finished cop,during the first winding phase a relatively short balloon length can bemaintained which has a favorable effect upon the spinning operation. Assoon as the winding up operation has progressed to such an extent thatthe upper end of the auxiliary bobbin body 2 has been nearly reached,the main bobbin body 1 and the auxiliary bobbin body 2 together with thewound up yarn thereon are moved relative to each other so that therelative location between the two bobbin bodies 1 and 2 will correspondto that of FIG. 2. By corresponding movement of the spindle rail or forinstance the ring rail, the winding up operation can be continuedwithout difficulties so that the winding layers pass from the upper endof the auxiliary bobbin body 2 to the main bobbin body 1. The winding upoperation will then be continued under these conditions until the upperend of the main bobbin body 1 has been covered with yarn in thecustomary manner. Also during this second phase, the winding is effectedwith a similarly favorable balloon length as was the case during thefirst winding phase. As soon as the yarn body on the cop carrier hasbeen completed, the cop carrier together with the cop thereon iswithdrawn from the spindle and may now be processed further. It will beobvious that the main bobbin body 1 together with the auxiliary bobbinbody 2 forms a stable cop carrier which has no tendency to bend duringthe operation or during further processing.

If for reasons of freight costs, a cop carrier similar to the well knowntransport sleeves is to be employed, as

shown in FIG. 3, the winding up operation will be effected in the samemanner as described above. After the winding operation has beencompleted, in this instance only the transport body 4 with the auxiliarybobbin body 5 thereon and the cop on the bobbin bodies 4 and 5 will bewithdrawn from the main bobbin body 3 and passed on for furtherprocessing.

The winding up of yarn upon a cop carrier composed of a main bobbin bodyand two auxiliary bobbin bodies as illustrated in FIGS. 4 to 6 isefiected in a similar manner. During the first winding phase,'the upperends of the 'main bobbin body 6 and also of the two auxiliary bobbinbodies" 7 and 8 are approximately at the same level, and the winding upof the yarn upon the entire cop carrier starts at the lower end body 8.As soon as the wound up yarn has reached the. upper end of the auxiliarybobbin body 8, the latter is displaced into FIG; 5 position, and thewinding up operation is continued while the yarn passes from theauxiliary bobbin body 8 to the auxiliary bobbin body 7. This operationis continued until also the yarn on the auxiliary bobbin body 7 reachesup to near the upper end thereof. Following this second winding phase,again a relative displacement between the main bobbin body 6 and theauxiliary bobbin bodies 7 and 8 is'eifected so that the lower ends ofall bobbin bodies will be approximately at the same level as shown inFIG. 6. Thereupon, the third Winding phase wiil be carried out while theyarn passes from the upper end of the auxiliary bobbin body 7 to themain bobbin body 6 and is continued on the latter until the upper end ofthe main bobbin body 6 has been reached by the yarn. At this time, thecop has been completed in its entire length.

When comparing a cop carrier provided with one auxiliary bobbin body asshown in FIGS. 1 or 2 with a cop carrier accordingto FIGS. 4 to 6provided with two auxiliary bobbin bodies, it will be seen that the samelength of the main bobbin body and with increasing number of auxiliarybobbin bodies a furfther reduction in the balloon length may beobtained. On the other hand, when maintaining a balloon length as itwill be obtained when winding up yarn on a carrier according to FIGS. 1and 2, and when employing a cop carrier according to FIG. 4 providedwith two bobbin bodies, an increase in the total length of the mainbobbin body and thereby of the cop to be produced can be obtained. Thisincrease yields a cop which is by one half larger than that which can beobtained with a cop carrier according to FIGS. 1 and 2. Correspondingremarks apply when employing a main bobbin body with three or moreauxiliary bobbin bodies, in which instance the increase depends on thenumber of the auxiliary bobbin bodies employed.

A cop carrier according to the invention may in various manners beadapted tothe various purposes of employment without sacrificing theessence of the present inventron. With many machines a continuouswinding up of a yarn on a cop carrier according to the invention ispossible when the parts controlling the winding permit correspondingmovements.

It is, of course, to be understood that the present inventron 1s, by nomeans, limited to the particular constructions shown in the drawings butalso comprises any modifications within the scope of the appendedclaims.

What I claim is:

l A cop carrier, which comprises in combination: a mam tubular bobbinmember equalling in length at least the total length of the maximum copto be produced on said cop carrier, and at least one auxiliary tubularbobbin means surrounding and slidably engaging said main tubular bobbinmember, said auxiliary bobbin means being considerably shorter than saidmain bobbin member and being adjustable in longitudinal directionthereof relative to and between the ends of said main bobbin member intodiiferent positions for winding yarn on said cop carrier, said auxiliarybobbin means being supported in any of the auxiliary bobbin of saidpositions along its entire length by said main bobbin member.

2. A cop carrier which comprises in combination: a main tubular bobbinmember equalling in length at least the total length of the maximum copto be produced on said cop carrier; at least one auxiliary tubularbobbin means having a substantially uniform inner diameter along itslength and surrounding and slidably engaging said main tubular bobbinmember; said auxiliary bobbin means being adjustable in longitudinaldirection thereof relative to and between the ends of said main bobbinmember into different positions for winding yarn on said cop carrier,said auxiliary bobbin means being supported in any of said positionsalong its entire length by said main bobbin member; the respectivelength of each auxiliary bobbin means equalling the length of said mainbobbin member divided by the quotient having as enumerator the totalnumber of all auxiliary bobbin means around said main bobbin member,increased by one, and having as denominator that number of auxiliarybobbin means which have an inner diameter larger than the outer diameterof the respective auxiliary bobbin means the length of which is to bedetermined, increased by one.

'3. A cop carrier according to claim 2, in which the main bobbin memberand the auxiliary bobbin means have the same wall thickness.

4. A cop carrier according to claim 2, in which the main bobbin memberand the auxiliary bobbin means have different wall thicknesses.

5. A cop carrier, which comprises in combination: a main tubular bobbinmember equalling in length at least the total length of the maximum copto be produced on said cop carrier, said main tubular bobbin membercomprising an inner tubular supporting body and a tubular transport bodydisengageably mounted on said supporting body and having a lengthsubstantially equalling the length of said supporting body, and at leastone auxiliary tubular bobbin means surrounding and slidably engagingsaid main tubular bobbin member; said auxiliary bobbin means beingconsiderably shorter than said main bobbin member and being adjustablein longitudinal direction thereof relative to and between the ends ofsaid main bobbin member into difierent positions for winding yarn onsaid cop carrier, said auxiliary bobbinmeans being supported in any ofsaid positions along its entire length by said main bobbin member, thewall thickness ofsaid transport body and the wall thickness of saidauxiliary bobbin means being approximately the same.

6. A cop carrier according to claim 1, in which said main bobbin memberand said auxiliary bobbin means surrounding said main bobbin member areprovided with meansfor rotatably inter-engaging same.

7. A cop carrier according to claim 1, which includes means for holdingsaid auxiliary bobbin means in the respective adjusted relative positionthereof.

References Cited in the file of this patent UNITED STATES PATENTS GreatBritain lune 18, 1958

1. A COP CARRIER, WHICH COMPRISES IN COMBINATION: A MAIN TUBULAR BOBBINMEMBER EQUALLING IN LENGTH AT LEAST THE TOTAL LENGTH OF THE MAXIMUM COPTO BE PRODUCED ON SAID COP CARRIER, AND AT LEAST ONE AUXILIARY TUBULARBOBBIN MEANS SURROUNDING AND SLIDABLY ENGAGING SAID MAIN TUBULAR BOBBINMEMBER, SAID AUXILIARY BOBBIN MEANS BEING CONSIDERABLY SHORTER THAN SAIDMAIN BOBBIN MEMBER AND BEING ADJUSTABLE IN LONGITUDINAL DIRECTIONTHEREOF RELATIVE TO AND BETWEEN THE ENDS OF SAID MAIN BOBBIN MEMBER INTODIFFERENT POSITIONS FOR WINDING YARN ON SAID COP CARRIER, SAID AUXILIARYBOBBIN MEANS BEING SUPPORTED IN ANY OF SAID POSITIONS ALONG ITS ENTIRELENGTH BY SAID MAIN BOBBIN MEMBER.